Showing 1–9 of 9 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Kiichiro Tsuchida | Nippon Steel | 3 |
| 2 | Michiaki Takahashi | — | 2 |
| 3 | Yasushi Owaki | — | 1 |
| 3 | Masaru Iwasa | Sumitomo Electric Industries | 1 |
| 3 | Hideaki Souma | Save The Planet Co. | 1 |
| 3 | Mika Makino | Kyowa Hakko Kogyo Co. | 1 |
| 3 | Teruo Kawabata | Nippon Steel | 1 |
| 3 | Kouichi Yamazaki | Hitachi | 1 |
| 3 | Ryuichi Seki | Nippon Steel | 1 |